Can´t install the game

[Osiris]

Steam told me I did not have enough space on my harddrive, but a have more than 300 GB free. It is the only game that has the problem. I didn´t changed anything in my settings on steam.

After I got the problem, I reinstalled steam. (delete all files except steamApps and EXE-File and than I started steam)

I also deleted the blob-File.

After that I installed other games with much more needed space, they all work fine.

Anyone has some ideas for me, please?